Data/Rap/Engine.pm

## ----------------------------------------------------------------------
##  $Id: Engine.pm,v 1.1 2003/02/18 15:35:25 joko Exp $
## ----------------------------------------------------------------------
##  $Log: Engine.pm,v $
##  Revision 1.1  2003/02/18 15:35:25  joko
##  + initial commit
##
## ----------------------------------------------------------------------


package Data::Rap::Engine;

use strict;
use warnings;


use Data::Dumper;
use Hash::Merge qw( merge );
use Iterate;

use shortcuts qw( run_cmd );
use Data::Code::Ref qw( ref_slot );
use Data::Transform::Deep qw( expand );


sub performTarget {
  my $self = shift;
  my $targetname = shift;
  $self->perform_target($targetname);
}

sub perform_target {
  my $self = shift;
  my $targetname = shift;

  $self->log("Performing Target '$targetname'.", 'notice');

  #exit;

  my $target = $self->getTargetDetails($targetname);

  # trace
    #print Dumper($target);
    #exit;
    
  $self->perform_dependencies($target);
  $self->perform_details($target);

}

sub perform_dependencies {
  my $self = shift;
  my $target = shift;
  # resolve dependencies (just run prior)
  if (my $targetname_dep = $target->{attrib}->{depends}) {
    my @targets = split(/,\s|,/, $targetname_dep);
    #print Dumper(@targets);
    #$self->perform($targetname_dep);
    #delete $target->{attrib}->{depends};
    foreach (@targets) {
      if (!$self->{__rap}->{dependencies}->{resolved}->{$_}++) {
        $self->perform_target($_);
      }
    }
    delete $target->{attrib}->{depends};
  }
}

sub perform_details {
  my $self = shift;
  my $target = shift;
  
  #print Dumper($target);
  #exit;
  
  foreach my $entry (@{$target->{content}}) {
    my $command = $entry->{name};
    my $args = $entry->{attrib};
    $self->perform_command($command, $args);
    # check recursiveness
    if ($entry->{content} && ref $entry->{content}) {
      $self->perform_details($entry);
    }
  }
}

sub rc {
  my $self = shift;
  return $self->perform_command(@_);
}

sub perform_command {
  my $self = shift;
  my $command = shift;

  if (!$command) {
    $self->log("Command was empty!", 'warning');
    return;
  }

  # FIXME: make '__PACKAGE__' go one level deeper properly!
  $self->log( __PACKAGE__ . "->perform_command: " . $command, 'debug');
  
  my $args_list = shift;
  my $args = {};
  #print Dumper($args_list);
  if ($args_list) {
    if (ref $args_list eq 'ARRAY') {
      foreach (@$args_list) {
        $args = merge($args, $_);
      }
    } else {
      $args = $args_list;
    }
  }
  $command = '_' . $command;
  
  
  # determine container
  my $container; # = $self->getInstance();
  $container ||= $self;
  
  if ($container->can($command)) {
    $container->$command($args);
  } else {
    $self->log("Command '$command' not implemented.", "warning");
  }
  
}


sub merge_properties {
  my $self = shift;
  my $name = shift;
  my $data = shift;

  $self->log("merge-name: $name");
  #print "name: $name", "\n";
  #print Dumper($data);
  #exit;

  # check if slot (or childs of it) is/are already occupied
  #if (my $data_old = ref_slot($self, $name, undef, '.')) {
  if (my $data_old = $self->get_property($name)) {
    #print "old:", "\n";
    #print Dumper($data_old);
    
    # FIXME: review - any options for 'merge' here?
    my $data_new = merge($data_old, $data);
    #print "DATA NEE! - MERGE!", "\n";
    #print Dumper($data_new);
    #exit;
    #hash2object($self, $data_new);
    $self->set_property( { name => $name, value => $data_new } );
    
  } else {

=pod    
    # make up a dummy hash matching the structure of the destination one
      my $dummy = {};
      ref_slot($dummy, $name, $data, '.');
      print Dumper($dummy);
    
    # mix into destination
      mixin($self, $dummy, { init => 1 });
=cut

      ref_slot($self, $name, $data, '.');

  }
  
  
  #print Dumper($self);
  #exit;
  #$self->

}

sub set_property {
  my $self = shift;
  my $args = shift;

  $self->interpolate($args) ;
  my $name = $args->{name};
  my $value = $args->{value};
  $name = '__rap.properties.' . $name;

  $self->log("set-name: $name");

  # fill property slot with given value
  if ($value) {
    ref_slot($self, $name, $value, '.');
  }
  
  #print Dumper($self);
  
  # FIXME!!!
  #return if ! ref $args;

  # fill property slot with (probably bigger) data structure from property-/configuration-style - file
  if (my $file = $args->{file}) {
    my $type = $args->{type};
    if (!$type) {
      die("default file (no type specified) is not implemented yet!");
    
    } elsif ($type eq 'perl-eval') {
      #die($type);
      $self->loadFromPerlFile($file, $name, $args->{'varnames'});
      
    } elsif ($type eq 'App::Config') {
      die("not implemented: $type");
      
    }

  } elsif (my $command = $args->{command}) {
    $self->perform_command($command, $args);
  
  }

}

sub get_property {
  my $self = shift;
  #my $args = shift;
  my $name = shift;

  #$self->interpolate($args);

  #my $name = $args->{name};
  my $result;

  if (!$name) {
    $self->log( __PACKAGE__ . ": no name!", 'critical');
    
  } elsif ($name eq '/') {
    $result = expand($self);

  } elsif ($name eq '.') {
    if (my $instance = $self->getInstance()) {
      $result = expand($instance);
    } else {
      $result = ref_slot($self, '__rap.properties', undef, '.');
      
    }

  } else {

    $name = '__rap.properties.' . $name;
    
    $self->log("get-name: $name");
    
    # get property slot and return value
    $result = ref_slot($self, $name, undef, '.');
    
    # FIXME: Is this okay? It's provided for now in order not
    # to deliver an 'undef' to the regex below inside 'interpolate'.
    # revamp this, maybe!
    #$result ||= '';    # NO!!!
  }
  
  return $result;
}

sub interpolate {
  my $self = shift;
  my $ref = shift;
  IterHash %$ref, sub {
    #print $_[1], "\n";
    $_[1] =~ s/\${(.+)}/$self->get_property($1)/e;
  }
}

sub run_executable {
  my $self = shift;
  my $opts = shift;

  if ($opts->{executable}) {

    my $program = $opts->{executable};
    delete $opts->{executable};

    my @buf;
    foreach (keys %$opts) {
      my $value = $opts->{$_};
      if ($value =~ /\s/) {
        $value = "\"$value\"";
      }
      push @buf, "--$_=$value";
    }
  
    my $cmd = $program . ' ' . join(' ', @buf);
    
    # trace
      #print "command: $cmd", "\n";
    
    # start process
      # V1: via shortcut
      #$ENV{PERL5LIB} = join(' ', @INC);
      
      # FIXME!!! what about the other slots of @INC?
      $ENV{PERL5LIB} = $INC[0];
      
      #print Dumper(%ENV);
      run_cmd($cmd);
      # V2: via IPC::Run
      # ....  (TODO)
    
    
  }
  
}


1;
__END__
1	joko	1.1	## ----------------------------------------------------------------------
2	joko	1.2	## $Id: Engine.pm,v 1.1 2003/02/18 15:35:25 joko Exp $
3	joko	1.1	## ----------------------------------------------------------------------
4	joko	1.2	## $Log: Engine.pm,v $
5			## Revision 1.1 2003/02/18 15:35:25 joko
6			## + initial commit
7			##
8	joko	1.1	## ----------------------------------------------------------------------
9
10
11			package Data::Rap::Engine;
12
13			use strict;
14			use warnings;
15
16
17			use Data::Dumper;
18	joko	1.2	use Hash::Merge qw( merge );
19	joko	1.1	use Iterate;
20	joko	1.2
21			use shortcuts qw( run_cmd );
22			use Data::Code::Ref qw( ref_slot );
23			use Data::Transform::Deep qw( expand );
24	joko	1.1
25
26			sub performTarget {
27			my $self = shift;
28			my $targetname = shift;
29	joko	1.2	$self->perform_target($targetname);
30			}
31
32			sub perform_target {
33			my $self = shift;
34			my $targetname = shift;
35
36			$self->log("Performing Target '$targetname'.", 'notice');
37
38			#exit;
39
40			my $target = $self->getTargetDetails($targetname);
41	joko	1.1
42			# trace
43			#print Dumper($target);
44			#exit;
45
46	joko	1.2	$self->perform_dependencies($target);
47			$self->perform_details($target);
48
49			}
50
51			sub perform_dependencies {
52			my $self = shift;
53			my $target = shift;
54	joko	1.1	# resolve dependencies (just run prior)
55			if (my $targetname_dep = $target->{attrib}->{depends}) {
56	joko	1.2	my @targets = split(/,\s\|,/, $targetname_dep);
57			#print Dumper(@targets);
58			#$self->perform($targetname_dep);
59			#delete $target->{attrib}->{depends};
60			foreach (@targets) {
61			if (!$self->{__rap}->{dependencies}->{resolved}->{$_}++) {
62			$self->perform_target($_);
63			}
64			}
65	joko	1.1	delete $target->{attrib}->{depends};
66			}
67	joko	1.2	}
68	joko	1.1
69	joko	1.2	sub perform_details {
70			my $self = shift;
71			my $target = shift;
72
73			#print Dumper($target);
74			#exit;
75
76	joko	1.1	foreach my $entry (@{$target->{content}}) {
77			my $command = $entry->{name};
78			my $args = $entry->{attrib};
79	joko	1.2	$self->perform_command($command, $args);
80			# check recursiveness
81			if ($entry->{content} && ref $entry->{content}) {
82			$self->perform_details($entry);
83			}
84	joko	1.1	}
85			}
86
87			sub rc {
88			my $self = shift;
89	joko	1.2	return $self->perform_command(@_);
90	joko	1.1	}
91
92	joko	1.2	sub perform_command {
93	joko	1.1	my $self = shift;
94			my $command = shift;
95	joko	1.2
96	joko	1.1	if (!$command) {
97			$self->log("Command was empty!", 'warning');
98			return;
99			}
100	joko	1.2
101			# FIXME: make '__PACKAGE__' go one level deeper properly!
102			$self->log( __PACKAGE__ . "->perform_command: " . $command, 'debug');
103	joko	1.1
104			my $args_list = shift;
105			my $args = {};
106			#print Dumper($args_list);
107			if ($args_list) {
108			if (ref $args_list eq 'ARRAY') {
109			foreach (@$args_list) {
110			$args = merge($args, $_);
111			}
112			} else {
113			$args = $args_list;
114			}
115			}
116			$command = '_' . $command;
117	joko	1.2
118
119			# determine container
120			my $container; # = $self->getInstance();
121			$container \|\|= $self;
122
123			if ($container->can($command)) {
124			$container->$command($args);
125	joko	1.1	} else {
126	joko	1.2	$self->log("Command '$command' not implemented.", "warning");
127	joko	1.1	}
128	joko	1.2
129	joko	1.1	}
130
131	joko	1.2
132			sub merge_properties {
133	joko	1.1	my $self = shift;
134	joko	1.2	my $name = shift;
135			my $data = shift;
136	joko	1.1
137	joko	1.2	$self->log("merge-name: $name");
138			#print "name: $name", "\n";
139			#print Dumper($data);
140			#exit;
141	joko	1.1
142	joko	1.2	# check if slot (or childs of it) is/are already occupied
143			#if (my $data_old = ref_slot($self, $name, undef, '.')) {
144			if (my $data_old = $self->get_property($name)) {
145			#print "old:", "\n";
146			#print Dumper($data_old);
147
148			# FIXME: review - any options for 'merge' here?
149			my $data_new = merge($data_old, $data);
150			#print "DATA NEE! - MERGE!", "\n";
151			#print Dumper($data_new);
152			#exit;
153			#hash2object($self, $data_new);
154			$self->set_property( { name => $name, value => $data_new } );
155
156	joko	1.1	} else {
157	joko	1.2
158			=pod
159			# make up a dummy hash matching the structure of the destination one
160			my $dummy = {};
161			ref_slot($dummy, $name, $data, '.');
162			print Dumper($dummy);
163
164			# mix into destination
165			mixin($self, $dummy, { init => 1 });
166			=cut
167
168			ref_slot($self, $name, $data, '.');
169
170	joko	1.1	}
171	joko	1.2
172
173			#print Dumper($self);
174			#exit;
175			#$self->
176
177			}
178	joko	1.1
179	joko	1.2	sub set_property {
180			my $self = shift;
181			my $args = shift;
182
183			$self->interpolate($args) ;
184			my $name = $args->{name};
185			my $value = $args->{value};
186			$name = '__rap.properties.' . $name;
187
188			$self->log("set-name: $name");
189	joko	1.1
190			# fill property slot with given value
191			if ($value) {
192	joko	1.2	ref_slot($self, $name, $value, '.');
193	joko	1.1	}
194
195	joko	1.2	#print Dumper($self);
196
197	joko	1.1	# FIXME!!!
198	joko	1.2	#return if ! ref $args;
199	joko	1.1
200			# fill property slot with (probably bigger) data structure from property-/configuration-style - file
201			if (my $file = $args->{file}) {
202			my $type = $args->{type};
203			if (!$type) {
204			die("default file (no type specified) is not implemented yet!");
205
206			} elsif ($type eq 'perl-eval') {
207			#die($type);
208			$self->loadFromPerlFile($file, $name, $args->{'varnames'});
209
210			} elsif ($type eq 'App::Config') {
211			die("not implemented: $type");
212
213			}
214
215			} elsif (my $command = $args->{command}) {
216	joko	1.2	$self->perform_command($command, $args);
217	joko	1.1
218			}
219
220			}
221
222			sub get_property {
223			my $self = shift;
224			#my $args = shift;
225			my $name = shift;
226
227			#$self->interpolate($args);
228
229			#my $name = $args->{name};
230	joko	1.2	my $result;
231
232			if (!$name) {
233			$self->log( __PACKAGE__ . ": no name!", 'critical');
234
235			} elsif ($name eq '/') {
236			$result = expand($self);
237
238			} elsif ($name eq '.') {
239			if (my $instance = $self->getInstance()) {
240			$result = expand($instance);
241			} else {
242			$result = ref_slot($self, '__rap.properties', undef, '.');
243
244			}
245	joko	1.1
246	joko	1.2	} else {
247
248			$name = '__rap.properties.' . $name;
249
250			$self->log("get-name: $name");
251
252			# get property slot and return value
253			$result = ref_slot($self, $name, undef, '.');
254
255			# FIXME: Is this okay? It's provided for now in order not
256			# to deliver an 'undef' to the regex below inside 'interpolate'.
257			# revamp this, maybe!
258			#$result \|\|= ''; # NO!!!
259			}
260	joko	1.1
261	joko	1.2	return $result;
262	joko	1.1	}
263
264			sub interpolate {
265			my $self = shift;
266			my $ref = shift;
267			IterHash %$ref, sub {
268			#print $_[1], "\n";
269			$_[1] =~ s/\${(.+)}/$self->get_property($1)/e;
270			}
271			}
272	joko	1.2
273			sub run_executable {
274			my $self = shift;
275			my $opts = shift;
276
277			if ($opts->{executable}) {
278
279			my $program = $opts->{executable};
280			delete $opts->{executable};
281
282			my @buf;
283			foreach (keys %$opts) {
284			my $value = $opts->{$_};
285			if ($value =~ /\s/) {
286			$value = "\"$value\"";
287			}
288			push @buf, "--$_=$value";
289			}
290
291			my $cmd = $program . ' ' . join(' ', @buf);
292
293			# trace
294			#print "command: $cmd", "\n";
295
296			# start process
297			# V1: via shortcut
298			#$ENV{PERL5LIB} = join(' ', @INC);
299
300			# FIXME!!! what about the other slots of @INC?
301			$ENV{PERL5LIB} = $INC[0];
302
303			#print Dumper(%ENV);
304			run_cmd($cmd);
305			# V2: via IPC::Run
306			# .... (TODO)
307
308
309			}
310
311			}
312
313	joko	1.1
314			1;
315			__END__
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